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In the Northern Hemisphere, rough alignment can be done by visually aligning the axis of the telescope mount with Polaris.In the Southern hemisphere or places where Polaris is not visible, a rough alignment can be performed by ensuring the mount is level, adjusting the latitude adjustment pointer to match the observer's latitude, and aligning the axis of the mount with true south or north by ...
Chert arrowhead, Late Neolithic (Rhodézien) (3300–2400 BC), current France An arrowhead or point is the usually sharpened and hardened tip of an arrow , which contributes a majority of the projectile mass and is responsible for impacting and penetrating a target, or sometimes for special purposes such as signaling .
The South Pole Traverse, also called the South Pole Overland Traverse (SPoT), [2] or McMurdo–South Pole Highway [3] is an approximately 995-mile-long (1,601 km) flagged route over compacted snow and ice [4] in Antarctica that links McMurdo Station on the coast to the Amundsen–Scott South Pole Station, both operated by the National Science Foundation of the United States. [5]
The term Right Ascension took its name from early northern hemisphere observers for whom "ascending stars" were on the east or right hand side. In the southern hemisphere the east is on the left when an equatorial mount is aligned on the south pole. Many Right Ascension setting circles therefore carry two sets of numbers, one showing the value ...
The average portolan chart had sixteen such roses (or confluence of lines), spaced out equally around the circumference of a large implicit circle. The cartographer Cresques Abraham of Majorca , in his Catalan Atlas of 1375, was the first to draw an ornate compass rose on a map.
Antarctica has the world's lowest rainfall average (zero at the Geographic South Pole) and thus is the world's driest continent. Despite its low rainfall average, Antarctica has approximately 70% of the world's fresh water (as well as 90% of the world's ice).
The Four Poles Challenge is an adventurer's challenge to reach the North Pole, the South Pole, the summit of Mount Everest and Challenger Deep.. The first person to reach all four locations was Victor Vescovo, who reached the top of Mount Everest on May 24, 2010, skied the last degree to the geographic South Pole on January 14, 2016, skied the last degree to the geographic North Pole in April ...
Rossville points are a type of arrowhead first recognized as a unique Native American cultural indicator in 1909 by archaeologists of the American Museum of Natural History. They were named by archaeologist Alanson Skinner after the Rossville section of Staten Island , New York, where they were found in the vicinity of the old U.S. Post Office ...